Docking port states docked when it isn't

### Steps to reproduce
1. Create a vessel with docking port not attached to another docking port
2. Undock

### Observed
Docking port states it is still docked and vessel is attached too until you timewarp

### Expected
It undocks as expected

### Additional Notes


**Game version**: 0.2.3.0.101291-internal (commit ba23b31)<br/>
**Internal tracker issue**: #184